# The Heathrow Airport–London Noise Insulation Grants Scheme 1989, Paragraph 9: Specification for combined ventilator system


The combined ventilator system shall conform to the design and standards of ventilation and acoustic performance specified in paragraph 2(1), 4(1)(a), 7 and 8 of this Schedule except that the requirement on paragraph 2(1) that the installation be made at the highest level which is reasonably practicable shall not apply.

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Source: https://www.legislation.gov.uk/uksi/1989/247/schedule/paragraph/9 (the official version)
Page: https://openlegislation.uk/heathrow-airportlondon-noise-insulation-grants-scheme-1989/schedule/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.